/* ===== Tokens ===== */
:root {
  --transition: 0.3s ease;
  --header-h: 70px;
}

[data-theme="dark"] {
  --bg: #0a0a0a;
  --bg-subtle: #111111;
  --fg: #f0f0f0;
  --fg-muted: #888888;
  --border: #1e1e1e;
  --header-bg: #111111;
  --header-border: #222222;
}

[data-theme="light"] {
  --bg: #fafafa;
  --bg-subtle: #f0f0f0;
  --fg: #111111;
  --fg-muted: #666666;
  --border: #e0e0e0;
  --header-bg: #ffffff;
  --header-border: #e8e8e8;
}

/* ===== Reset ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  font-weight: 300;
  line-height: 1.6;
  transition:
    background var(--transition),
    color var(--transition);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 100;
  padding: 0 2.5rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  transition:
    background var(--transition),
    border-color var(--transition);
}

.site-logo {
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-logo img {
  height: 30px;
  width: auto;
}

.header-end {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.site-nav a {
  font-family: "Montserrat", sans-serif;
  font-weight: 400;
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  color: var(--fg);
  opacity: 0.6;
  transition: opacity var(--transition);
}

.site-nav a:hover,
.site-nav a.active {
  opacity: 1;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  color: var(--fg);
  opacity: 0.6;
  transition: opacity var(--transition);
}
.theme-toggle:hover {
  opacity: 1;
}

[data-theme="dark"] .icon-sun {
  display: block;
}
[data-theme="dark"] .icon-moon {
  display: none;
}
[data-theme="light"] .icon-sun {
  display: none;
}
[data-theme="light"] .icon-moon {
  display: block;
}

/* Logo variants */
[data-theme="light"] .logo-dark {
  display: none;
}
[data-theme="dark"] .logo-light {
  display: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--fg);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: currentColor;
  transition:
    transform var(--transition),
    opacity var(--transition);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ===== Gallery Grid ===== */
.gallery {
  padding-top: var(--header-h);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.gallery-item {
  aspect-ratio: 3/2;
  overflow: hidden;
  background: var(--bg-subtle);
}

/* ===== Shared image-fill pattern ===== */
.gallery-item img,
.about-duo-item img,
.about-trio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== About Page ===== */
.about-opening {
  padding: calc(var(--header-h) + 5rem) 2rem 5rem;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

/* Shared eyebrow label style */
.about-eyebrow,
.about-contact-label {
  display: block;
  font-family: "Montserrat", sans-serif;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.about-eyebrow {
  margin-bottom: 2rem;
}
.about-contact-label {
  margin-bottom: 1.75rem;
}

.about-headline {
  font-family: "Montserrat", sans-serif;
  font-weight: 300;
  font-size: clamp(2.2rem, 5.5vw, 4.5rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin-bottom: 2.5rem;
}

.about-intro {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--fg-muted);
  max-width: 520px;
  margin: 0 auto;
}

.about-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.about-duo-item {
  aspect-ratio: 3/2;
  overflow: hidden;
}

.about-text {
  padding: 6rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.about-text-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.about-text-cols p {
  font-size: 1rem;
  line-height: 1.88;
  color: var(--fg-muted);
}

.about-trio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.about-trio-item {
  aspect-ratio: 3/2;
  overflow: hidden;
}

.about-contact {
  padding: 6rem 2rem 8rem;
  text-align: center;
  max-width: 580px;
  margin: 0 auto;
}

.about-contact-text {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--fg-muted);
  margin-bottom: 2.25rem;
}

.about-contact-email {
  font-family: "Montserrat", sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--fg);
  border-bottom: 1px solid currentColor;
  padding-bottom: 3px;
  transition: opacity var(--transition);
}
.about-contact-email:hover {
  opacity: 0.6;
}

/* ===== Footer ===== */
.site-footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.footer-social {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.footer-social a {
  display: flex;
  align-items: center;
  color: var(--fg-muted);
  transition: color var(--transition);
}
.footer-social a:hover {
  color: var(--fg);
}

.footer-copy {
  font-family: "Montserrat", sans-serif;
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-trio {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 0 1.5rem;
  }

  .site-nav {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--bg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    z-index: 99;
  }
  .site-nav.open {
    display: flex;
  }
  .site-nav a {
    font-size: 1.1rem;
    color: var(--fg);
    opacity: 0.7;
  }
  .site-nav a:hover,
  .site-nav a.active {
    opacity: 1;
  }
  .site-nav .theme-toggle {
    color: var(--fg);
  }

  .nav-toggle {
    display: flex;
    z-index: 101;
  }

  .about-opening {
    padding: calc(var(--header-h) + 3rem) 1.5rem 3.5rem;
  }
  .about-duo {
    grid-template-columns: 1fr;
  }
  .about-text {
    padding: 4rem 1.5rem;
  }
  .about-text-cols {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .about-trio {
    grid-template-columns: 1fr;
  }
  .about-contact {
    padding: 4rem 1.5rem 6rem;
  }
}